The Charles Lipschitz International Stamp Collection is comprised of postage stamps and commemorative first-day issue envelopes, dating from approximately 1915 to 1989. The majority of the materials correspond to the nations of the African continent, in particular South Africa and the apartheid-era Bantustans of Bophuthatswana, Ciskei, Transkei, and Venda. Other nations represented by this collection include the United Kingdom, Canada, Israel, Switzerland, and other countries in Europe and Asia.
The Sidney R. Whitmore Collection (approximately 1885-1970) contains land deeds and other documents about Mount Diablo, Nevada; documents detailing parts of his family history; and eight framed paintings of landscapes and portraits.